Mechanical movement



T.MARflN MECHANICAL MOVEMENT June 17, 192%.

Filed Oct. 16.;923 s Sheets-Sheet 1 June 17, 1924.

T. MARTIN MECHANICAL MOVEMENT :s Sheets-Sheet 2 Filed Oct. 16. 1923 T. MARTIN MECHANICAL MOVEMENT Filed Oct. 16. 1923 I5 Sheets-Sheet 5 Patented June 17, 1924.

QFFIC'E.

TR-AUGOTT MARTIN, OF PATERSON, NEW JERSEY.

- MECHANICAL MOVEMENT.

Application filed October 16, 1923. Serial No. 668,812.

T 0 all whom it may concern: 7

Be it known that I, ITRAUGOTT MARTlN, a citizen of the United States, residing at Paterson, in the county of Passaic and State of New Jersey, have invented certain new and useful Improvements in Mechanical Movements, of which the following is a specification.

This invention consists in a novel mechanical movement designed to be employed, for example, in the shifting of some part from one to another of different positions, as the shuttle-carrying structure of a loom having shuttles movable therein and across the loom at different elevations. In looms for weaving only a single piece of goods at a time the said structure is a group of boxes at one end of the lay and it is a comparatively simple problem to provide means for shifting it vertically to bring one or' another of the shuttles to position; but in narrow-ware looms, where there are usually a number of fabrics woven at a time, the said structure necessarily extends across the loom, and for this and other reasons concerned with the manipulations of the shuttles, it becomes quite an involved matter to provide suitable means for shifting said structure to bring one or another of the several superposed series of shuttles into position. Usually a mechanical movement is employed in which the shiftings are obtained from a gear which is turned one way or the other according as it is shifted into meshing relation to one or the other of two constantly rotated mutilated gears (see, for example, Patent No. 336,623); but mechanisms of this kind are necessarily more or less complicated in construction and they require constant attention to keep them in order, principally on ac count of the presence of the mutilated gears, and the back and forth rotations of the third gear, which give rise to undue wear and tear and lost motion. In the novel mechanism herein set forth it is sought to overcome these objections by eliminating the mutilated gears and the alternate forward and back rotation of any part.

In the drawings,

Fig. 1 is'aside elevation of the improved mechanical movement shown in operative position on a loom of the narrow-ware type,

whose frame appears in dotted outline;

Fig: 2 is n devatron of my mech n sm a shaft 03. Below shaft Z) is the rockashaft c.

which with its arms 7 and g projecting forward and rearward therefrom forms a rockpair of the arms 7 (though only one is shown), one at each end of shaft c so as to '70 or or lever structure; usually there will be a afiord support for the structure to be moved vertically at each of its ends, whereas there Wlll be only one arm g.

In a bracket h rigidly secured to the side of frame a is fulcrumed between its ends lever i and in the rear end of this lever is fulcrumed between its ends a longer leverj.

,The rear end of .lever is connected to the arm 9 by a pitman 7c and it may also be connected with the floor or other fixed point by a s ring'Z which it is common to use in mec anisms of this class to counterbalance the weight of the structure to be moved. Each lever is adapted to be moved on its fulcrum from one to the other of two limits;

consequently it is possible, according to the I positions which the levers are respectively made to'assume, to cause the structure to be moved vertically to assume four positions, as will be clearly evident from the diagrammatic views, Figs. 6' and 7. This lever arrangement is not in itself new.

The levers i and y have their forward ends pivotally connected by links m n with eccentric studs 0* 79* of two pinions 0 which are respectively journaled on studs 0' 79 projecting from the bracket it. These pinions, as will appear, are adapted to be turned through half-revolutions, and for holding them in the positions to which they are thus turned each has a hub 0. p presenting two opposite facets and against which a springpressed detent lever 0 p fulcrumed' on a stud 0 bears.

A half-revolution of each pinion shiftsthe corresponding lever i (7') from one of its said limits to the other. The pinions mesh respectively with gears Q r revoluble independently of each; other on a stud 8 projecting from said bracket h. Said gears are of the same size and each twice thesize of either of the pinions, so that a quarterrevolution of either gear produces a halfrevolution of the corresponding pinion. The gears are rotated in the counter-clockwise direction, rotation thereof in the contrary direction being prevented by holding pawls t u pivoted on a stud 0) projecting from bracket 7L and engaging ratchets g 1" on the gears. The gears have cage-like ratchets, each formed by four pins g 7 equally spaced around the axis of the gear and projecting therefrom, 9* 1 being fixed spaced flanges or disks on the pins (see Figs. 3 and 4:).

Each gear is adapted to be rotated a quarterrevolution at a time, subject to the control of pattern mechanism, as follows: A lever to is fulcrumed to vibrate on a stud 00 projecting from the mentioned bracket, in the present case depending from said stud, and it has a longitudinal slot 10 receiving an eccentric stud 7 on a bevel gear 3 journaled on a stud 2 in said bracket, the gear being constantly rotated (so that the lever is constantly reciprocated) by a bevel pinion 2 meshing therewith and fixed on a vertical shaft 3 which is journaled in the frame a (see Fig. and is connected with shaft 5 by the gearing at. The lever has two pairs of pawls here shown for example connected therewith pivotally, each pair being cooperative with the mentioned cagelike ratchet of one of the gears so that as the lever moves in one direction one pawl in either (or both) pair may catch the ratchet to turn the gear a quarter-revolution while the other pawl idles over the ratchet and as the lever moves in the other direction the latter pawl may catch the ratchet to turn the gear another quarterrevolution while the first-named pawl idles, and so on. One pawl, 5, in each pair is in the present example a pull-pawl and is above its ratchet and the other, 6, is a pushpawl, being below the ratchet. The stud 7 on which each two pawls 5 or 6 are mountedsee Fig. 3--is fixed in a block 8 held in an opening 9 in the lever w by a setscrew 10 having a lock-nut 11. The pawls are all gravity-depressed, the pawls 5 into and the pawls 6 out of engagement with the ratchets. In bracket h on a stud 12 is fulcrumed a pair of rocking levers 13, one for each pair of pawls, normally urged in one direction by a spring 141 and adapted to be shifted in the other direction from any suitable pattern mechanism (as the jacquard machine of the loom) through connections 15. One end of each lever 13 is connected with one of the pullpawls 5 by a connection 16; the other end of each lever is connected with one of the push-pawls 6 by a connection which here consists of a lifter 17, pivoted on stud o and on which the push-pawl rests, and a link 17 con necting the lifter with lever 13. In other words, 16, 13, 17", 17 form a pattern-con trolled connecting means between the two pawls in each pair whereby the pawls, normally urged one into and the other out of engagement with the ratchet, are coupled together for synchronous movement both into or out of engagement with the ratchet.

In addition, there may be. two springpressed members 18 which bear against the eccentric studs 0" 79* of pinions 0 and p and serve to ease the movements of the pinions and the parts actuated thereby, especially since the weight of these parts, with the added weight of the structure to be moved, would otherwise produce when they descend undue noise, jar and a racking of the mechanism.

Operatz'0n.The lever 10, as stated, vibrates constantly, swinging to right or left for each full revolution of shaft 6 (because the gearing at 2g is in the ratio of 21). As to either lever 13, when it is at its righthand limit of movement it lifts the pullpawl 5, and allows the push-pawl 6 to fall, out of engagement with the corresponding cage-like ratchet, so that the corresponding gear, 9 (r), pinion 0 (p) and lever 2' remain at a standstill; but when lever 13 is shifted to its other limit both pawls 5 and 6 are brought into active relation to the ratchet and so long as the lever 13 retains that position the lever to will through pawl 5 on each stroke in one direction pull, and through pawl 6 on each stroke in the other direction push, the corresponding gear 9 (1") around a quarter-revolution, which will turn pinion 0 (p) the half-revolution necessary to shift the corresponding lever i (7') from one to the other of its limits of movement. Thus by proper control of the levers 13 from any pattern mechanism the structure to be moved may be made to assume any of four different positions, going from any one to any other of such positions.

It is not essential that there be a plurality of means to be moved to different positions, as each means herein shown and described as consisting on the one hand of. the train of parts 9, 0, m and z' and on the other of the train of parts 1", p, n and j and herein having their parts z' and j in the form of levers fulcrumed one in the other so that there results a compounding of their motions useful when the ultimate structure to be moved is designed to assume more than two positions. The invention, as will be seen from the appended claims, applies to either r the other.

I claim:

1. In combination, with a support, means to be moved therein to different positions including a rotary member, a back-andforth-moving actuator, rotationimparting devices for said member each connected with the actuator to move back and forth therewith and one of them being adapted to catch and rotate said member in a given direction, and the other to idle with respect to said member, when said devices move one way and the latter device being adapted to catch and rotate said member in the same direction, and the former device to idle with respect to said member, when said devices move the other way, said devices being shiftable into and out of engagement with said member, and pattern-controlled means to shift both devices at once. 1

2. In combination, with a support, means to be moved therein to different positions including a rotary member, a back-and forth-moving actuator, rotation-imparting devices for said member each connected with said actuator to move back and forth therewith and one of them being arranged to catch said member at one side of its axis to rotate the same in a given direction and the other to catch said member at the relatively opposite side of its axis to rotate the same in said direction, said devices being shiftable into and out of engagement with said member, and pattern-controlled means to shift both said devices at once. i

3. In combination, with a support,means to be moved therein to difierent positions including a rotary member, a back-andforth-moving actuator, rotation-imparting devices for said member each connected with said actuator to move back and forth therewith and one of them being arranged to catch said member at one side of its axis to rotate the same in a given direction and the other to catch said member at the relatively opposite side of its axis to rotate the same in said direction, said devices being shiftable into and out of engagement with said member and one of them being normally urged into and the other out of such engagement, and means coupling the two devices together for synchronous movement both into and outof engagement with the said member.

4:. In combination, with a support, means to be moved therein to different positions including arotary member, a back-andforth-moving actuator,means to impart rotation in one direction only to said member from the back-and-forth movement of the actuator, and pattern-controlled means for rendering the second-named means at times inactive to impartrotation to said member.

5. In combination, with a suitable support, means to be moved therein to diflerent positions including a rotary member, a constantly going rotary memberhaving its axis substantially parallel with that of the first member, a ,back-and-forth-moflng actuator driven by and operatively connected with an eccentric point of the second rotary member, means to impart rotation in one direction only to the first-named rotary member from the back-and-forth movement of the actuator, and pattern-controlled means for rendering the vsecond-named means at times inactive to impart rotation to said member.

In testimony whereof I affix my signature.

TRAUGOTT MARTIN. 

